Socket-wrench.



w. A. FIHELD. SOCKET WRENCH. APPLICATION FILED JAN. 31, 1918.

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Paiented Oct. 15, 1918.

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To all whom it may concern:

it known that I, i lamas; A. Frrinno, subject of the King of G at Britain, residing at Abbey, Province Saskatchewan, Canada, have invented certai new and useful li'nprovements in Socket. .Vrenches, of which the following is a specification.

This invention relates to a socket wrench.

and has its primary object to provide a 31.. not and then 1 down over the same spring ath of its removal. The iiivei this connectio wherein the not on ga will equipped w 21 con lugs to cooperate with the nut and wserein the suell, upon beclr n ged down over the nut, will tightly bind with the out.

And the inve on be. a siii further object to prev an arrangeme t wl the nut receiving socket of the shell will be out back or recessed at opposite sides therc-- of for receiving the r 'msoi? the nut cngag ing yoke so that the said arms will cooperate with the shell to complete the symmetrical contour of the walls of the said socket for snugly receiving the not.

Other and incidental objects will appear as the description proceeds, and in the drawings wherein I have illustrated the preferred embodiment of the invention, and wherein similar reference characters designate corresponding parts throughout the several views:

Figure 1 is a vertical sectional view showing my impromd device engaged with the out of a conventional type of bolt and illustrating the manner in which the shell of the device is adapted to depress the spring tongue of a locking washer normally holding the nut,

Specification of Letters Eatent.

mie arms the yoke in engagement Patented Oct. 15, 1918.

Application filed January 31, 183$. Serial No. 214,678.

Fig. 2 is a similar view showing the manner in which the device is applied to the nut,

F 1g. 3 is a transverse sectional view taken on the line 33 of Fig. 1, and illustrating the manner in which the socket of the shell of the device is recessed at opposite sides thereof for receiving the arms of the nut engaging yoke of the wrench,

Fig. 4 is a plan view illustrating the normal disposition of the spring tongue of the locking washer for the nut,

Fig. 5 is a detail perspective view of the shell, and

Fig. 6 is a fragmentary perspective view showing the nut engaging yoke in detail.

In carrying out the invention I employ a hell or body 10 provided with an axial nut receiving socket 11 and formed at its up or i ity with a reduced portion 12 having aces to receive any suitable tool for ro- "rating the shell. Slidably mounted within a nut engaging yoke 13 shown in ig. 6 oi the drawings. As there ted this yoke is preferably formed of suitable resilient sheet metal and is provided with substantially parallel spring arms 14 largcd between the arms and struck from the arms adjacent their free ends are oppositely disposed and inwardly directed centering lugs 15. Rising from the connecting portion of the yoke is, a stem 16. As particularly brought out in Figs. 1 and 2 of the drawings, the yoke is somewhat shorter than the depth of the nut receiving socket of the shell and. as shown in Fig. 3, this socket is cut back or provided at opposite sides thereof with longitudinally extending recesses 17 slidably receiving the arms of the yoke. The stem 16 or" the yoke is loosely received through the top wall of the shell and adjustably connecting the said yoke with the shell is a hollow handle or grip 18, screw threaded upon the said stem to cooperate with the shell. As will be clear, this grip may berotated for retracting the yoke into the nut receiving socket of the shell and normally tending to eject the said yoke from the shell is a helical ejector spring 19 surrounding the joined by a connecting portion laterally endevice in connection with a conventional type of bolt 20 fitted through coaeting members 21,'representing the work, and equipped with a nut 22. For the purposes of the prcsent invention this nut is formed upon opposite side faces thereof with-sockets 23. Interposed between the nut and the Work to surr und the bolt is a fiat washer 2d haw ing. an upwardly deflected resilient locking tongue struck therefrom to normally enage one side of the nut. as shown in Fig. 4. for holding the nut against retrograde movement and consequently locking the nut upon the bolt. In use. the grip 18 is first adjusted to permit the yoke to be elected from the shell in the manner suggested in Fig. 2 of the drawings, when the spring arms 14- ol the yoke are then flexed to fit over opposite sides of the nut 22 and engage the lugs 15 thereof within the sockets As will be clear, these lugs will act to retain the yoke centered with PQSDGGi to the nut so that the grip 38 may then he adjusted upon the yoke stem 16 for retractingthe yoke within the shell and onsequently shifting}: the shell agrz nst the tension of the spring lflsdown over the nut to snugly receive the nut. as shown in Fig. 1. within the nut receiving socket 11. in this position ot the shell the said shell will. of course, act to firmlv hind the armsof the yoke against the sides of the nut and in this connection it is to be particularly noted. as shown in Fig. 3. that the said arms. hv being mounted ithin the recesses 17 of the socket 11. are arranned to complete the svmmetrical contour of the socket and court with the wa s thereof for engagement with the nut. The device will. when rotated for urninr he nut. thus act a ainst all sides of th nut and while. in the present instance, l have shown the nut as formed with six side and. t e socket ll of the shell similarly cons ructed to li the nut. still it is to he understood that T do not wish to be limited in this regard. as the contour of the said socket may he readily varied within the spirit of the present invention for receiving other types oi. nuts.

Attention is now directed to the factv that when the grip '18 isadjusted to engage the shell 10 over the nut 22 as previously descrihcd. the said shell will, in being disposed to overlie the locking tongue of the washer Q-l. he. at the same time. caused to depress the said tongue, as shown in Fig. 'l.'-and hold the tongue out oi the path of iioiary movement of the nut so that the said nut may l'ie'readily displaced. Thus. my improvwl socket wrench is. as previously mentioned. particularly adapted for use in any instance where the nut of'a bolt held y a locking washer otthe ehann-ler shown and it will he noted that the shell is formed with a flat and smooth inner end to engage tion of the grip for adjusting the yoke including spaced resilient arms and the locking tongue of the washer so that when the shell is rotated with the nut. the said shell may readily ride over the tongue. As particularly shown in Figs. 1 and not the drawings, the grip 18 is provided with a wrench receiving portion. By thus :torin; ing the said grip, the device rendered. particularly convenient for removing the nuts holding the teeth of a threshing inachine cylinder. \Vhen so used, the yoke is 7 first connected in the manner previously de scribed, with the nut of the tooth which it is desired to reino"e, when a suitable wrench may then be inserted witl'iin the cylinder and engaged with the wrench receiving; poo go grip to The clamp the shell. 10 down over the nut.

device will then be firmly connected. with the nut so that a wrench or other su table tool may he engaged with the reduced pore tion 12 of the shell for rotating; the shell to remove the said nut. Since the device thus adapted to he-initiallv ce nneete rigidly with the nut ready 101' the apples tionof a wrench to th shell For For Win the nut. the dilhcul'ty which isnow empem enced in properly engaging an ordinary wrench with the nuts of the 'liruier tee h owing to the limited soace "i cylinder is overcome.

Having thus described the invention, we is claimed as new is:

1. A. device of the character descrih d in. cluding a shell formed with a nut receiving socket, and a nut engaging yoke adjustable upon the shell axially of the said socket, the said yoke including substantially resilient arms adapted to embrace a not for engagement with opposite sides thereof.

2. A device of the character dcscril. in eluding a shell formed with a nut receiving socket, a nut engaging yoke adjiustable u: in the shell axially of the said so .-\et. the said centering lugs carried by the free extremities o'l said arms and adapted for engagement with opposite sides of a nut for centering the yoke and socket with respect to the nut.

3. A device of the character described ineluding: a, shell provided with a nut receiw ing socket. and a nut en uging yoke ad justahle upon the shell axially oi the l socket and including spaced arms adapt d ('llll')ln(:(, a nut and disposed when within the socket to complete the symmetrical. contour thereof.

4. A device of the character descrihed iii-- eluding: a shell provided with a nut reeeiving socket having opposite walls thereof re cessed. and a nut engaging yoke adjustable 125 upon the shell axially of the said socket and including spaced arms-adapted to embrace a nut and received within said recesses to coiiperate with the walls of the sockct'and complete the symn'ietrical contour thereof. 1.60

5. A device of-the character described including a shell having a smooth fiat inner end and provided with a not receiving socket, and a nut engaging yoke adjustable upon the shell axially of the said socket to a position lying Within the socket whereby the shell may fitovcr a nut engaged by the yoke with the inner end of the shell holding a normally upsprung locking tongue of a locking washer for the nut depressed out of. the path of rotary movement of the nut.

(3. A device of the character described invluding a shell provided with a nut receiving socket, annt engaging yoke carried by the shell and shiftable into the said socket, a stern projecting from said yoke through the wall of the shell at the inner end of the socket, and means carried by the said stem to cooperate with the shell for adjusting the yoke axially of the said socket.

7. A device of the character described including a shell provided with a nut receiving socket, a nut engaging yoke carried by the shell and shiftable into the said socket, a stem projecting from said yoke through the wall of the shell at the inner end of. the socket, means carried by thesaid stem to cooperate with the shell for'adjusting the yoke axially of the said socket, and yieldable means bearing between the shell and yoke and tending to project the yoke from the said socket.

In testimony whereof I afiix my signature.

WILLIAM A. FIFIELD. [1,. s.] 

